The kde-misc category contains various miscellaneous KDE packages.
In general, packages here are extensions of the Plasma desktop environment
(ioslaves, command center modules, plasmoids, ...), while KDE applications
that do not rely on the desktop environment better suit other categories.
Based on the data of repology.org, there might be a new version available for these packages. Please don't solely rely on this information, as the repology data might not be accurate.